Home / 3,953.80-5,456.33-2,185.57

Finding the Fourth Proportional to 3,953.80, 5,456.33 and 2,185.57

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Solution

The fourth proportional to 3,953.80, 5,456.33 and 2,185.57 is: 3,016.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.80 : 5,456.33 = 2,185.57 : x
  2. Step 2: Convert to fraction form
    3,953.80/5,456.33 = 2,185.57/x
  3. Step 3: Cross multiply
    3,953.80x = 5,456.33 × 2,185.57
  4. Step 4: Simplify right side
    3,953.80x = 11,925,191.16
  5. Step 5: Solve for x
    x = 11,925,191.16/3,953.80
  6. Step 6: Final answer
    x = 3,016.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.